24AA256T-I/MF

Memory IC Overview

The Microchip Technology 24AA256T-I/MF is a 256-Kbit (32K x 8) serial EEPROM featuring an I²C-compatible two-wire interface. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports clock frequencies up to 400 kHz within the industrial temperature range of -40°C to +85°C. The device utilizes an 8-lead DFN package and includes hardware write protection, Schmitt trigger inputs for noise suppression, and output slope control to minimize ground bounce.

Memory IC Feature Summary

• Supports cascading up to eight devices on a single bus using configurable chip select pins.
• Includes a 64-byte page write buffer to optimize data transfer efficiency.
• Features hardware write protection via the WP pin to secure memory arrays.

Memory IC Applications

• Personal communications equipment
• Data acquisition systems
• Low-power embedded applications

Memory IC Procurement Notes

Verify that the ordering suffix 'MF' corresponds specifically to the 8-lead DFN package type required for your design. Confirm the 'I' designation matches the necessary industrial temperature operating range. Ensure the 'T' indicates tape-and-reel packaging if automated assembly is planned. Cross-reference the specific revision level with the manufacturer's datasheet to confirm compatibility with existing system requirements.

Memory IC Selection Notes

Select this component when a low-voltage operation down to 1.7V is required alongside standard I²C communication protocols. The 24AA256 series is suitable for designs needing high endurance and long data retention. Consider the 8-lead DFN footprint constraints during PCB layout. Verify that the maximum clock frequency of 400 kHz aligns with the host controller's capabilities at the lowest operating voltage.

Memory IC Part Context

This part belongs to the 24XX256 family of serial EEPROMs manufactured by Microchip Technology. The family includes variants such as the 24LC256 and 24FC256, which differ primarily in minimum operating voltage and maximum clock speed specifications. The 24AA256 variant is optimized for broader voltage compatibility starting at 1.7V.

Memory IC Replacement Considerations

The 24LC256T-I/MF serves as a functional substitute but requires a minimum supply voltage of 2.5V instead of 1.7V. The 24FC256T-I/MF offers higher clock speeds up to 1 MHz but shares similar electrical characteristics otherwise. Ensure voltage levels are compatible before substituting these parts.